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Upstream Project Abandonment Operations

PCONS/DISMGB
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Who should attend?

  • More than ever, decommissioning is on the horizon for the Oil & Gas industry, accelerated by the sustained low oil price, ageing assets and government interventions.
  • However, it's not an easy decision or process. There's the challenge of balancing Maximizing Economic Recovery (MER) with decommissioning objectives, as well as effectively managing operations in later life to ensure the cost burden is minimized and safety still maintained prior to Cessation of Production (CoP).
  • This course covers the various ways towards a smooth transition from operation to cessation of production (CoP).
Audience :
  • Engineers and technicians whose activities are related to the decommissioning of Oil & Gas facilities either onshore or offshore.

Level : Proficiency

Course Content

  • DECOMMISSIONING PROJECTS MANAGEMENT

      • Overview of platform decommissioning projects.
      • Engineering analysis.
      • Operational planning.
      • Logistics constraints.
      • Contracting.

  • Case study day 1: DECOMMISSIONING COST LIABILITY ESTIMATION

      • LR was requested to estimate the decommissioning cost liability for a large number of non-operated SNS offshore assets varying significantly in complexity and type, with various different infrastructures.

  • PERMITTING & REGULATORY COMPLIANCE

      • Regulatory framework.
      • Decommissioning execution plan.
      • Environmental impact assessment:
      • Pre/Post decommissioning surveys.
      • Soil, surface water and ground water pollution control.
      • Soil pollution remediation.
      • Optimize decommissioning spendings.
      • Project efficiency.
      • Best practice adherence.
      • Understand and reduce risk.

  • Case study day 2: INTEGRATED DECOMMISSIONING PLANNING

      • LR provided planning support, including building a deterministic schedule and project governance, for the decommissioning of a number of North Sea assets.

  • PLATFORM PREPARATION - SAFETY IN DECOMMISSIONING ACTIVITIES

      • Topsides preparation:
      • Residual hydrocarbons removal in pipework, process and storage equipment (flushing, cleaning).
      • Modules separation and preparation for lifting.
      • Risk related to process equipment decommissioning and preparation for lifting; associated safety procedures.
      • Subsea preparation.
      • Compliance with government and industry guidelines and standards.
      • Ongoing operational verification of safety critical elements.
      • Class and certification of innovative decommissioning.

  • Case study day 3: DECOMMISSIONING COST LIABILITY ESTIMATION

      • Learn more about the Brent Decommissioning Comparative Assessment Process and how this has been applied to the project.

  • WELL PLUGGING & ABANDONMENT (P&A)

      • Well abandonment overview.
      • Short term and long term well integrity.
      • Types of well completions.
      • Primary-cementing; preventing gas migration; fishing.
      • Plugging and abandonment methods, procedures and technologies.
      • Remedial squeeze cementing and cement-plug placement as permanent well-barrier elements.
      • Conductor removal.

  • PLATFORM REMOVAL

      • Transport barge and lifting capacity requirements.
      • Topsides removal.
      • Subsea structure (jacket) removal.
      • Seabed removal (templates, pilings).

  • PIPELINE DECOMMISSIONING

      • Pipeline decommissioning and burial procedure.

  • MATERIALS DISPOSAL & SITE CLEARANCE

      • Platform materials disposal and recycling.
      • Site clearance: pre/post decommissioning surveys, site clearance assessment (divers, ROV, test trawling).

Learning Objectives

  • Upon completion of the course, participants will be able to understand:
  • the regulatory and technical complexities of late life operations and decommissioning,
  • cessation of production (CoP) preparation,
  • planning and surveys,
  • plug and abandonment,
  • waste management,
  • monitoring post removal.

Ways & Means

  • Highly interactive course delivered by experts of the E&P industry:
  • 3 case studies,
  • Few videos and animations illustrating the main aspects of dismantlement.